weatherboarding vs weatherboard

weatherboarding and weatherboard both are nouns.

Word	Noun	Adjective	Verb	Adverb
weatherboarding	Yes	No	No	No
weatherboard	Yes	No	No	No

As nouns, weatherboarding and weatherboard are synonyms defined as:

weatherboarding and weatherboard: a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below

Other synonyms of weatherboarding include clapboard.

weatherboarding (noun)	weatherboard (noun)
a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below	the side toward the wind
	a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below